Swen elias swenson



N 0 S N EM W0 S S No. 574,179. Patented Dec 29, 1896 W/T/VESSES: I l/VI/E/VTOR BY M fill/EV.

UNITED STATES PATENT OFFICE.

SIVEN ELIAS SWVENSON, OF NEW YORK, N. Y., A SSIGNOR OF ONE-HALF TO E. MELVERN ROCHE, OF BLOOMFIELD, NEW JERSEY.

LOCK.

SPECIFICATION forming part of Letters Patent No. 574,179, dated December 29, 1896.

, Application filed April 29, 1896. Serial No. 589,506. (No model.)

To all whom it may concern: by which means they are arbored on the spin- Be it known that I, SWEN ELIAS SWENSON, dle B. acitizen of the United States, residing at New The back plate B has an annular chamber York, in the county and State of New York, in its center B ,'and in the center of this chain- 55 haveinvented a new and useful Improvement berisafixed post B, as above stated. A boltin Locks, of which the following is a full and slot B is also formed on one of its upper sides, true description. while on the other side a lug B with a hole My invention relates particularly tosuch bored through it is fixed. Attached to one looks as are adapted to be operated without side of the plate B is the spring-pawl B The 60 the use of a key. end of this pawl B extends into the annular The object of my invention is to provide a chamber B and when the lock is operated ensimple and effective lock having a series of gages in the edges of the ratchet-wheels D locking combinations which can readilybe opand G. erated by the sense of feeling as well as by Into the bolt-slot B the bolt 0 operates. 65 the sight. This bolt has a curved recess C on one side, the I effect my object by the means illustrated purpose of which will be seen in the paragraph in the accompanying drawings, in which like on operation of the device. It has also upon letters refer to like parts in each, the same one side a hole adapted to make by its means being fully explained in the specification. a chain connection. 70 Figure l is a front View of the lock, show- The ratchet-plates D and G are ratcheting the dial-plate with indicators in position. toothed on the greater portion of their outer Fig. 2 is aview of the inside of the back plate, boundary. The segment not. toothed, D, is showing the center post and recesses for the alike in size and shape in both disks, as are ratchet-wheels and spring-pawl. Fig. 3 is a also the teeth on the other portion. The pawl 75 2 5 view of the back plate with one of the ratchet- 13 operates in the toothed edges of both wheels wheels in position. Fig. 4 shows a detail of at the same time. The lock is adapted to opthe several working parts. crate only in one direction, that is to say, it In the drawings, A represents the dial-plate can only be rotated in one direction, owing to of my look. This dial-plate is fixed and does the pawl B as it is shown in the drawings, 80 not move in any direction. I have shown it but it is evident that it can be made to operas octagon in shape. The particular shape, atein either direction. The ratchet-disks are however, is unimportant, as other shapes centrally perforated and have collars D to would answer my purpose as well. The idenwhich the hands are fixed and by which means tification by the sense of feeling of the differthey are rotated. 8 5 5 cut parts of the periphery being important, The operation of-this lock is as follows: a shape other than a circular one is desirable. When the parts of the locks are assembled, Upon the dial-plate A is located a series of they are so assembled that if possible no two markings A and A In the drawings these locks will open at the same combination. In are shown as numbers and crosses disposed the drawings the indicators are set at 2 and 90 40 in a circular manner near the outer boundary 5. Any deviation from this condition would of the dial-plate. These numbers and mark prevent the look from opening. Now the inings are preferably raised upon the dial-plate terior of this look with the indicators prop- A, so that they may be readily felt. In the erly placed would show the edges D D in center of the dial-plateis ahole through which alinement and forming with a portion of the 5 5 the post B passes, and on this post B is arwalls of the annular chambera bolt-chamber bored the ratchet-Wheels D and G, to which from which the bolt 0 could be withdrawn or are fixed the indicators A and A the one replaced with no difficulty, but should the over the other, but loosely, that is to say, so dials or one of them be moved even slightly that each may rotate over the dial-plate A inone or more of the teeth would enter the space I00 dependently. It will be seen that the indiwhere the curved side of the bolt is seen and cators have each a quill E attached to one end, obstruct the passage of the bolt from the chamber in which it is lodged. The bolt can only be placed in its chamber with the curved portion toward the center. As the numbers are raised on the dial and as the shape or conformation of the perimeter of the lock is more or less divergent from a smooth disk, when it is desired to secure anything by means of the lock, (as where it is usedin place of the ordinary padloek,) the bolt 0 is passed through the bolt-slot B and into the bolt chamber or space formed by alining the edges of the segmented portions D D of the ratchet-wheels D The ratchet-wheels, or one of them, are now rotated, and the teeth on them entering the bolt-ehamber locks the bolt securely, thus preventing the chain a, one end of which is attached to the bolt and the other to the lug B, from being withdrawn from any article through which it has been passed. As in many cases, especially when bicycles or other vehicles are secured at night, it would be too dark to see, this lock admits of the combination being found by the sense of feeling. Let us saythe combination is 2 and 6. From a previous examination of the lock it is known that 2 is in eontiguity with the fixed lug 13". (It should be remarked that the indicators are of diiferent sizes, so that the correct one maybe selected in a moment.) Observation has also taught the one using the lock that 6 is on the sixth side of the octagon, (if the lock is of that shape,) and a touch of the finger reveals its actual location. The second indicator is thus put in proper position. This completes the alinement of the edges D, and the bolt 0 may be easily withdrawn.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination in a lock of a dial-plate having a series of markings eircumferentially arranged upon it, a back plate attached to said dial-plate having an annular chamber, a bolt arranged to operate in a bolt-slot formed in said chamber, a centrally-located post fixed in said chamber having two or more centrallyperforated ratchet-disks arbored upon it, said disks having correspondential segments removed from them, one or more pawls to engage the ratchet-teeth of said disks and a series of two or more indicators attached to and arranged to rotate said disks as herein shown and described;

2. The herein-described lock consisting of a centrallyperforated fixed dial-plate having an indicating edge and a series of raised indicating-marks upon its surface, a back plate having a central fixed post, an annular cl1amber a fixed spring-pawl and a lock-bolt chamber, in combination with a series of partiallytoothed centrally-perforated disks, each disk having a uniform portion removed, said disks provided with collars arranged to sleeve over the said fixed post and over each other, a bolt having a curved recess on one side adapted to be lodged in said bolt-chamber, and indicators provided with collars, adapting them to be fixed to the said disk-collars, and to operate or rotate the same, as herein shown and described.

SWEN ELIAS SWENSON.

Witnesses:

S. J. Cox, Jr., R. 'l. DUNCAN. 

